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为解决飞行仿真领域其视景系统对逼真、复杂场景渲染质量要求高的问题,提出基于延迟着色技术的大场景反走样渲染架构以实现全球地景及场景特效的真实感渲染,达到飞行训练的效果。本渲染架构主要解决延迟着色技术与硬件反走样技术——覆盖采样反走样(CSAA)不兼容的问题,在延迟阶段生成带CSAA反走样的多渲染目标缓存(G-Buffer),在着色阶段通过记录在特定通道中的透明度蒙版信息进行几何体边缘恢复以进行最终的光照计算;对不同绘制组件开启不同等级的反走样等级以达到效果与效率的平衡,并利用类层次细节(LOD)模型构建技术及标记重要边界信息进行后处理等加强反走样效果。采用本渲染架构开发的视景系统,从实际训练及实验所得到的数据与效果表现上决定不同负载组件最终的采样倍数,这样系统的实时性高(>60fps),能达到飞行模拟视景对渲染效率的要求,减少延迟与卡顿;同时该框架反走样效果好于亚像素还原反走样(SRAA)算法,从而视景系统能达到性能与画质的最佳组合。通过实际训练与飞行模拟专家鉴定,基于该框架系统的视景系统能达到飞行仿真训练的目的。
In order to solve the problem that the visual system in the field of flight simulation has high requirements on the rendering quality of realistic and complicated scenes, a large-scene anti-aliasing rendering architecture based on delay shading technology is proposed to realize the realistic rendering of the global landscape and scene effects to achieve flight training effect. The rendering architecture mainly solves the problem that the delay shading technique and the hardware anti-aliasing technique are incompatible with the covering anti-aliasing (CSAA), and generates the multi-rendering target buffer (G-Buffer) with CSAA anti-aliasing during the delay phase, Record the transparency mask information in a specific channel for geometry edge recovery for final lighting calculation; turn on different levels of anti-aliasing level for different drawing components to achieve the balance between efficiency and efficiency and construct with class level detail (LOD) model Technology and mark the important border information post-processing and other anti-aliasing effect. The visual system developed by using this rendering architecture determines the final sampling multiples of different load components from the actual training and experimental data and performance performance so that the real-time performance of the system is high (> 60fps) Rendering efficiency requirements, reduce the delay and Caton; at the same time the anti-aliasing effect of the framework is better than sub-pixel reduction anti-aliasing (SRAA) algorithm, so the visual system can achieve the best combination of performance and quality. Through the actual training and flight simulation expert appraisal, the visual system based on the frame system can achieve the purpose of flight simulation training.